Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eba3c29dd660031…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 07:14:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8d3f5305d0bcac7663244eee68b9d76b SHA-1: 33ce70f8c0640f5ad5089c27765ebe7b73dc8be4 SHA-256: 4eba3c29dd660031c090f6dda441d31e379db21b52ac3bcde8cfce4ba822ce58
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/406889139/coin-master-free-spins-haktuts-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/abd-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/pokemon-go-free-or-gotcha_GM1094591345.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BD 24752 bytes
SHA-256: 0680da7ea080800851a69102dfe79e6af2d018c139bf9fa18d87775bd4821e94
font_01_sfnt_off0000899d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899D 2896 bytes
SHA-256: 98478e2fbfabd582329b6206c0d46f67523cf5e299cb16118f1065b4dd5ec6a6
font_02_sfnt_off00009383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9383 18196 bytes
SHA-256: 60e5d1f6f12937761343702ff54c0624bbba5eb6b748e0cd555839fa9283373b

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